All they would have to do, if that was their concern, would be to re-negotiate their contracts with whatever clauses they feel are necessary. They were there, they could have hosed the place.
The area I used to live in did not have city trash service. There were several services available and you had to pay for one of them to pick up your trash.
Now, that trash truck comes by the house, every week. But... if I don't pay, they don't pick up the trash.
I’m not sure that’s feasible.
First, as others have pointed otu, there’s the insurance aspect for the firemen tehmselves.
Plus, while the guy may agree to any terms offered at the time, would you be able to collect? Does he even have the money? Would he pay you, or claim he was under duress?